Apparatus for temporarily plugging inaccessible tube and method

Details Apparatus for temporarily plugging inaccessible tube and method Apparatus for temporarily plugging inaccessible tube and method

1986-03-06

1988-02-09

Levy, Stewart J.

Measuring and testing

With fluid pressure

Leakage

73 498, 138 90, G01M 304

Patent

active

047234407

ABSTRACT:
A tube plugging device for temporarily plugging a tube having accessible open ends and a method for leak-testing a shell-and-tube type heat exchanger, in which the channel cover is removed from the heat exchanger, while leaving the head cover and shell cover in place, the end of the tube, adjacent the head and shell covers, is plugged by inserting and expanding an elongated plug device having an expandable sealing ring slidably mounted on one end of an elongated rod, a sleeve slidably mounted on the rod to bear against the sealing ring and expand the same and an expanding means threadably mounted on the other end of the rod to bear against the other end of the sleeve and expand the sealing ring, and a fluid under pressure is introduced into the shell-side of the heat exchanger.

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W. L. Nelson, Petroleum Refinery Engineering, Fourth Edition, 1958, McGraw Hill, p. 546 FIG. 17-7, "A Floating Head Type of Exchanger".

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